Air passes from the trachea into the lungs through two large tubes called?

Answer - Bronchi.

Bronchi are the principal route to the lungs. When one breathes using their nose or mouth, the air goes directly into the larynx, and then into the trachea. And the closer the bronchi get to lungs the smaller they get and there they are referred to as bronchioles. 

water solution

Nearly all of the body's chemical reactions, including those that produce energy and build new tissues, take place in a water solution. Homeostasis is the process of maintaining a steady state inside your body.